Between 1984 (in the U.S.) and 1986 (in Germany), Commodore International celebrated the 1,000,000 machines sold mark in these respective countries by issuing special "Gold" editions of the Commodore C64.

These machines were regular C64 models, except they were Golden-colored and fixed on a commemorative plate.

The following information comes from Death Adder :
Until December 1986, 1,000,000 Commodore 64s were sold in Germany. On this occasion, Commodore Buromaschinen GmbH (Commodore's German subsidiary) released a limited edition of a golden C64, with serial numbers numbering 1,000,000 to 1,000,199; they were presented to the public in the BMW museum in Germany that Commodore had rented for this event. One of these machines was donated to the German magazine "64'er" (serial number 1,000,058).

In the middle of the acrylic plate on which it was mounted, you could read: